66623931 divided by 509 
We're looking to find how many times 509 goes into 66623931.

On to step 1:
509 can be fit into 6 0 times, resulting in a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Include the next digit (6) from the dividend after 6, then repeat: 66 / 509

On to step 2:
66 divided by 509 is 0 with a remainder of 66.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 66, we end up with 66.
Take the next digit (6) from the dividend and append it to 66, then repeat: 666 / 509

Advancing to step 3:
509 can be fit into 666 1 times, resulting in a remainder of 157.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtract 509 from 666 to get 157.
Take the next digit (2) from the dividend and append it to 157, then repeat: 1572 / 509

Going ahead to step 4:
The number 509 fits into 1572 3 times, leaving a remainder of 45.
Record the quotient 3 as the next digit in the result. 
Result so far: 13.0
Deduct 1527 from 1572 and we're left with 45.
Fetch the next digit (3) from the dividend, attach it to 45 and continue: 453 / 509

Let's proceed to step 5:
When dividing 453 by 509, we get 0 with a remainder of 453.
Put 0 as the next digit of the answer. 
Result so far: 130.0
Deduct 0 from 453 and we're left with 453.
Fetch the next digit (9) from the dividend, attach it to 453 and continue: 4539 / 509

Advancing to step 6:
4539 divided by 509 is 8 with a remainder of 467.
Put 8 as the next digit of the answer. 
Result so far: 1308.0
Subtracting 4072 from 4539 leaves us with 467.
Grab the next digit (3) from the dividend, add it to 467, then carry on: 4673 / 509

Advancing to step 7:
509 goes into 4673 9 times with a remainder of 92.
Use 9 as the next digit of our solution. 
Result so far: 13089.0
If we take 4581 away from 4673, we end up with 92.
Grab the next digit (1) from the dividend, add it to 92, then carry on: 921 / 509

Step 8:
The number 509 fits into 921 1 times, leaving a remainder of 412.
Write down 1 as next digit of the result. 
Result so far: 130891.0
If we take 509 away from 921, we end up with 412.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4120, and continue the process.

Step 9:
When dividing 4120 by 509, we get 8 with a remainder of 48.
Record the quotient 8 as the next digit in the result. 
Result so far: 130891.8
If we take 4072 away from 4120, we end up with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Advancing to step 10:
If we divide 480 by 509, we get 0 and a remainder of 480.
Record the quotient 0 as the next digit in the result. 
Result so far: 130891.8
The remainder is 480 after subtracting 0 from 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4800, and continue the process.

On to step 11:
When dividing 4800 by 509, we get 9 with a remainder of 219.
Record the quotient 9 as the next digit in the result. 
Result so far: 130891.809
If we subtract 4581 from 4800, we get 219.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2190, and continue the process.

On to step 12:
2190 divided by 509 is 4 with a remainder of 154.
Put 4 as the next digit of the answer. 
Result so far: 130891.8094
Deduct 2036 from 2190 and we're left with 154.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1540, and continue the process.

Advancing to step 13:
When dividing 1540 by 509, we get 3 with a remainder of 13.
The number 3 becomes the next digit in our result. 
Result so far: 130891.80943
If we take 1527 away from 1540, we end up with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Advancing to step 14:
If we divide 130 by 509, we get 0 and a remainder of 130.
Record the quotient 0 as the next digit in the result. 
Result so far: 130891.80943
Subtracting 0 from 130 leaves us with 130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1300, and continue the process.

Moving on to step 15:
If we divide 1300 by 509, we get 2 and a remainder of 282.
Record the quotient 2 as the next digit in the result. 
Result so far: 130891.8094302
Subtracting 1018 from 1300 leaves us with 282.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2820, and continue the process.

Moving on to step 16:
If we divide 2820 by 509, we get 5 and a remainder of 275.
Record the quotient 5 as the next digit in the result. 
Result so far: 130891.80943025
Subtract 2545 from 2820 to get 275.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2750, and continue the process.

The final result is 130891.80943025 with a remainder of 2.75e-07.